Question

If $D_x=18,D_y=15$ and $D=3$ are the values of the determinants for certain simultaneous equations in $x$ and $y$, then find the values of $x$ and $y$.

Answer 1

Given $D_x=18,D_y=15$ and $D=3$
Now, $x=\frac{D_x}{D}=\frac{18}{3}=6$
$y=\frac{D_y}{D}=\frac{15}{3}=5$
$\therefore$ The value of $x$ and $y$ is $6$ and $5$ respectively.